A203066 T(n,k)=Number of nXk 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

1, 7, 7, 49, 455, 49, 252, 16625, 16625, 252, 1127, 491953, 3421817, 491953, 1127, 4977, 14623955, 608893191, 608893191, 14623955, 4977, 22736, 449303011, 111898706731, 647485600638, 111898706731, 449303011, 22736, 105813

Offset

1,2

Comments

Table starts

......1............7.................49......................252

......7..........455..............16625...................491953

.....49........16625............3421817................608893191

....252.......491953..........608893191.............647485600638

...1127.....14623955.......111898706731..........710826096063039

...4977....449303011.....20929382959987.......791448514067936533

..22736..13830934581...3898031053158067....877818049790930479334

.105813.423540231589.724530008223344653.972407155723593469149291

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

Some solutions for n=5 k=3
..4..2..1....2..4..1....4..6..2....2..0..6....5..0..6....1..6..5....5..6..2
..6..2..3....4..4..4....5..6..1....2..2..6....5..6..6....1..6..5....1..6..5
..6..4..5....1..6..2....1..2..3....2..4..0....1..2..3....3..3..4....4..1..3
..3..5..5....3..6..1....5..0..6....1..4..5....5..3..5....4..5..1....4..1..6
..3..5..3....0..6..1....5..0..6....0..3..5....5..3..5....0..5..4....6..6..6

Crossrefs

Sequence in context: A245132 A222462 A214887 * A165425 A220079 A153272

Adjacent sequences: A203063 A203064 A203065 * A203067 A203068 A203069

Keyword

nonn,tabl

Author

R. H. Hardin Dec 28 2011

Status

approved